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Questions about RAM usage, including optimizing memory use, avoiding and fixing leaks and releasing unused memory.

2
votes
I suspect part of the problem may be in specifying integer variables, e.g. if the underlying code does branching (offhand I don't know if this happens though). So you could change it to take a real ve …
answered Nov 20 '14 by Daniel Lichtblau
8
votes
This is a very confusing mess of code. It seems to conmingle formatting with functionality, and that certainly does not make it straightforward to see what is wanted, let alone provide code. So what I …
answered Jan 6 '14 by Daniel Lichtblau
12
votes
-> {"InlineExternalDefinitions" -> True, "InlineCompiledFunctions" -> True}, CompilationTarget -> "C", RuntimeOptions -> "Speed"]]; This next takes up substantial memory. But it is fairly fast. In[6 … the parent word never required a test of length k neighbors to go all the way to the last elements in each pair member, for all k (4) Memory remains a serious issue. One way to address that is to pack …
answered Aug 23 '12 by Daniel Lichtblau
5
votes
This is a bit long for a comment. You can use a tandem of LinearSolve and NullSpace. But for exact problems this will, I'm fairly sure, use dense matrices. That takes you back to what Solve is doing …
answered Sep 22 '14 by Daniel Lichtblau
20
votes
Here is the method I outlined. I'll illustrate on a small example where we split matrix into top and bottom halves. In[794]:= SeedRandom[1111]; halfsize = 3; mat = RandomInteger[{-4, 4}, {2*halfsize, …
answered Jun 13 '12 by Daniel Lichtblau